Explain the terms used in interconversion of states of matter.

Solve the below given puzzle.

Across:

3. _____ sublime on heating.

5. Conversion of solid directly into gas.

6. Reverse of freezing.

7. Anything that occupies space and has mass.

Down:

1. Fixed temperature at which a liquid boils.

2. Reverse of sublimation.

4. Force between particles of matter.